ZLIX A 15500 N vehicle is to be lifted by a 30 cm diameter hydraulic piston. Wha

Question

ZLIX A 15500 N vehicle is to be lifted by a 30 cm diameter hydraulic piston. What force needs to be applied to a 6.0 cm diameter piston to accomplish this? 10 a. 513.3 N b. 649.2 N c. 620.0N d. 688.9N e. 499.3N f. 634.7 N Try F1 F2 - Suppose "1" is the input and "2" is the output. Is it F or F2 that equals 13000 N ? IZUY A perfect fluid flows through a pipe with varying radius. If at one cross section with radius 20 cm the fluid is flowing at 5.0 m/s, then what is the speed at a cross section with radius 4.0 cm? a. 146.5 m/s b. 125.0 m/s c. 134.2 m/s d. 106.3 m/s e. 144.6 m/s f. 110.3 m/s Try

Explanation / Answer

a)

From

F1/d12 = F2/d22

F1=15500*(6/30)2=620 N

b)

From continuity equation

r12V1=r22V2

202*5=42*V2

V2=125 m/s

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